KR970073090A - Aspect ratio conversion device and method - Google Patents

Aspect ratio conversion device and method Download PDF

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Publication number
KR970073090A
KR970073090A KR1019960013480A KR19960013480A KR970073090A KR 970073090 A KR970073090 A KR 970073090A KR 1019960013480 A KR1019960013480 A KR 1019960013480A KR 19960013480 A KR19960013480 A KR 19960013480A KR 970073090 A KR970073090 A KR 970073090A
Authority
KR
South Korea
Prior art keywords
frequency
aspect ratio
enable signal
write
video data
Prior art date
Application number
KR1019960013480A
Other languages
Korean (ko)
Other versions
KR100194922B1 (en
Inventor
이효승
Original Assignee
김광호
삼성전자 주식회사
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 김광호, 삼성전자 주식회사 filed Critical 김광호
Priority to KR1019960013480A priority Critical patent/KR100194922B1/en
Priority to US08/719,623 priority patent/US5793434A/en
Priority to CN96112423A priority patent/CN1102317C/en
Priority to JP8287087A priority patent/JPH09307832A/en
Publication of KR970073090A publication Critical patent/KR970073090A/en
Application granted granted Critical
Publication of KR100194922B1 publication Critical patent/KR100194922B1/en

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N7/00—Television systems
    • H04N7/01—Conversion of standards, e.g. involving analogue television standards or digital television standards processed at pixel level
    • H04N7/0117—Conversion of standards, e.g. involving analogue television standards or digital television standards processed at pixel level involving conversion of the spatial resolution of the incoming video signal
    • H04N7/0122—Conversion of standards, e.g. involving analogue television standards or digital television standards processed at pixel level involving conversion of the spatial resolution of the incoming video signal the input and the output signals having different aspect ratios
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F5/00—Methods or arrangements for data conversion without changing the order or content of the data handled
    • G06F5/06—Methods or arrangements for data conversion without changing the order or content of the data handled for changing the speed of data flow, i.e. speed regularising or timing, e.g. delay lines, FIFO buffers; over- or underrun control therefor
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N7/00—Television systems
    • H04N7/01—Conversion of standards, e.g. involving analogue television standards or digital television standards processed at pixel level
    • H04N7/0105—Conversion of standards, e.g. involving analogue television standards or digital television standards processed at pixel level using a storage device with different write and read speed

Abstract

1. 청구범위에 기재된 발명이 속한 기술분야1. Technical field to which the invention described in the claims belongs

디지털 비디오신호 처리장치Digital video signal processing device

2. 발명이 해결하려고 하는 기술적 과제2. Technical Challenges to be Solved by the Invention

하나의 FIFO(First Input First Output) 메모리를 이용하여 간단하게 화면비를 변환하는 장치 및 방법을 제공함에 있다.And an apparatus and method for simply converting an aspect ratio using one FIFO (First Input First Output) memory.

3. 발명의 해결방법의 요지3. The point of the solution of the invention

본 제1화면비를 제2화면비로 변환하기 위한 화면비 변환장치는 쓰기 및 읽기 인에이블신호와 제1주파수의 쓰기클럭신호신호와 상기 제1주파수와 다른 제1주파수의 읽기클럭신호를 발생하는 제어회로와, 상기 쓰기인에이블 신호에 응답하여 상기 제1주파수에 동기하는 비디오 데이터를 쓰고, 상기 읽기인에이블신호에 응답하여 상기 제2주파수에동기하는 상기 쓰여진 비디오 데이터를 읽어내는 메모리를 가짐으로써 상기 메모리는 적어도 상기 제1주파수와 상기 제2주파수의 차에 대응하는 화소데이터를 저장할 수 있는 용량을 가짐을 특징으로 한다.The aspect ratio conversion device for converting the first aspect ratio to the second aspect ratio includes a write and read enable signal, a write clock signal of a first frequency, and a read clock signal of a first frequency different from the first frequency, And a memory for writing the video data synchronized with the first frequency in response to the write enable signal and reading the written video data synchronized with the second frequency in response to the read enable signal, Has a capacity capable of storing pixel data corresponding to a difference between at least the first frequency and the second frequency.

4. 발명의 중요한 용도4. Important Uses of the Invention

텔레비젼 등의 화면비를 변환하는 데 이용된다.And is used to convert the aspect ratio of a television or the like.

Description

화면비 변환장치 및 방법Aspect ratio conversion device and method

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음Since this is a trivial issue, I did not include the contents of the text.

제4도는 본 발명의 일 실시예에 따른 화면비 변환장치의 구성을 나타내는 도면, 제5도는 제4도에 도시된 화면비 변환장치에서 16:9의 화면비를 4:3의 화면비로 변환하는 과정 및 그 제어신호의 파형을 간략히 나타낸 도면, 제6도는 제5도에 도시된 파형을 상세히 나타낸 도면.FIG. 4 is a diagram illustrating a configuration of an aspect ratio conversion apparatus according to an embodiment of the present invention. FIG. 5 and FIG. 4 illustrate a process of converting an aspect ratio of 16: 9 into an aspect ratio of 4: FIG. 6 is a view showing the waveforms shown in FIG. 5 in detail; FIG.

Claims (4)

제1화면비를 제2화면비로 변환하기 위한 화면비 변환장치에 있어서, 쓰기 및 읽기 인에이블신호와 제1주파수의 쓰기클럭신호신호와 상기 제1주파수와 다른 제1주파수의 읽기클럭신호를 발생하는 제어회로와, 상기 쓰기 인에이블신호에 응답하여 상기 제1주파수에 동기하는 비디오 데이터를 쓰고, 상기 읽기인에이블신호에 응답하여 상기 제2주파수에 동기하는 상기 쓰여진 비디오 데이터를 읽어내는 메모리를 가짐으로써 상기 메모리는 적어도 상기 제1주파수와 상기 제2주파수의 차에 대응하는 화소데이터를 저장할 수 있는 용량을 가짐을 특징으로 하는 화면비 변환장치.The aspect ratio conversion apparatus for converting a first aspect ratio to a second aspect ratio, the apparatus comprising: a control unit generating a write and read enable signal, a write clock signal of a first frequency, and a read clock signal of a first frequency different from the first frequency, And a memory for writing the video data synchronized with the first frequency in response to the write enable signal and reading the written video data synchronized with the second frequency in response to the read enable signal, Wherein the memory has a capacity capable of storing pixel data corresponding to a difference between at least the first frequency and the second frequency. 제1항에 있어서, 상기 제1주파수가 상기 제2주파수 보다 고주파임을 특징으로 하는 장치.The apparatus of claim 1, wherein the first frequency is higher than the second frequency. 제1항에 있어서, 상기 제1주파수는 18MHz이고 상기 제2주파수는 13.5MHz임을 특징으로 하는 장치.2. The apparatus of claim 1, wherein the first frequency is 18 MHz and the second frequency is 13.5 MHz. 제1화면비를 제2화면비로 변환하기 위한 화면비 변환방법에 있어서, 쓰기인에이블　신호에 응답하여 제1주파수에 동기하여 비디오 데이터를 쓰는 제 1과정과, 읽기인에이블신호에 응답하여 상기 제1주파수와 다른 제2주파수에 동기하여 상기 쓰여진 제 비디오 데이터를 읽어 내는 제2과정을 가짐을 특징으로 하는 화면비 변환방법.A method of converting an aspect ratio of a first aspect ratio into a second aspect ratio, the method comprising: a first step of writing video data in synchronization with a first frequency in response to a write enable signal; And a second step of reading the written video data in synchronization with a second frequency different from the first frequency. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: It is disclosed by the contents of the first application.
KR1019960013480A 1996-04-29 1996-04-29 Aspect ratio inverter KR100194922B1 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
KR1019960013480A KR100194922B1 (en) 1996-04-29 1996-04-29 Aspect ratio inverter
US08/719,623 US5793434A (en) 1996-04-29 1996-09-25 Aspect ratio converter and method thereof
CN96112423A CN1102317C (en) 1996-04-29 1996-10-15 Aspect ratio converter and method thereof
JP8287087A JPH09307832A (en) 1996-04-29 1996-10-29 Picture ratio converter and its method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019960013480A KR100194922B1 (en) 1996-04-29 1996-04-29 Aspect ratio inverter

Publications (2)

Publication Number Publication Date
KR970073090A true KR970073090A (en) 1997-11-07
KR100194922B1 KR100194922B1 (en) 1999-06-15

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KR1019960013480A KR100194922B1 (en) 1996-04-29 1996-04-29 Aspect ratio inverter

Country Status (4)

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US (1) US5793434A (en)
JP (1) JPH09307832A (en)
KR (1) KR100194922B1 (en)
CN (1) CN1102317C (en)

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JPH10341415A (en) * 1997-06-06 1998-12-22 Pioneer Electron Corp Picture processor
JP4345937B2 (en) * 1998-11-10 2009-10-14 キヤノン株式会社 Image enlargement processing circuit
JP2000152121A (en) * 1998-11-13 2000-05-30 Sony Corp Clock generating circuit, image display device and method
US6115072A (en) * 1999-01-27 2000-09-05 Motorola, Inc. 16:9 aspect ratio conversion by letterbox method for an MPEG image
KR100323678B1 (en) * 2000-02-28 2002-02-07 구자홍 Apparatus for converting screen aspect ratio
JP4144193B2 (en) * 2000-10-25 2008-09-03 ソニー株式会社 Display panel and display device
KR100429874B1 (en) * 2001-07-20 2004-05-04 삼성전자주식회사 Image processing apparatus for realizing panorama/waterglass function and method thereof
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US7928994B2 (en) * 2003-07-16 2011-04-19 Transpacific Image, Llc Graphics items that extend outside a background perimeter
US7570270B2 (en) * 2004-05-21 2009-08-04 Broadcom Corporation Buffer for driving display with asynchronous display engine
KR100618870B1 (en) * 2004-10-23 2006-08-31 삼성전자주식회사 A method for data training
CN101742081B (en) * 2009-12-11 2012-11-21 华亚微电子（上海）有限公司 Image stabilizer

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US5331346A (en) * 1992-10-07 1994-07-19 Panasonic Technologies, Inc. Approximating sample rate conversion system
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Also Published As

Publication number Publication date
CN1102317C (en) 2003-02-26
CN1164164A (en) 1997-11-05
KR100194922B1 (en) 1999-06-15
US5793434A (en) 1998-08-11
JPH09307832A (en) 1997-11-28

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